Path: utzoo!utgpu!watserv1!watmath!att!occrsh!uokmax!apple!usc!cs.utexas.edu!asuvax!anasaz!qip!john
From: john@qip.UUCP (John Moore)
Newsgroups: sci.electronics
Subject: Re: NiCd recharging
Message-ID: <4485@qip.UUCP>
Date: 11 Sep 90 21:27:24 GMT
References: <1990Sep7.132221.6202@ux1.cso.uiuc.edu> <17660102@hpfcdj.HP.COM>
Reply-To: john@qip.UUCP (John Moore)
Organization: Anasazi Inc, Phoenix AZ
Lines: 36

In article <17660102@hpfcdj.HP.COM> myers@hpfcdj.HP.COM (Bob Myers) writes:
]>A while back (I believe it was Spring '90) there was a discussion
]>of how "fully" to discharge nickle-cadmium batteries before
]>recharging, so as to avoid the "memory" effect. Question:
]
]
]Once again, with feeling:
]
]There IS NO "memory effect" in nicads, at least none that has ever been
]documented by the battery manufacturers since the very early days of these
]cells.  Cell degradation which has been attributed to "memory" is almost 
]always due to improper charging practices, and there is absolutely NO need
]to deliberately discharge a cell for no other reason than to get ready to
]charge it up, IF your charger is properly designed to STOP WHAT IT'S DOING
]when the cell is fully charged.
]
]

Bob,
  This is NOT a flame. However, in light of the conflicting claims,
I would appreciate you backing up your statements with references
or personal experimental experience or whatever. I would love
to believe you, but would like to see more details.

  For example, what is the chemistry behind memory that its believers
claim? How do you rebut it? Is there any chemistry, or is it just 
superstition? Did there use to be memory with oldcells, but no longer?


Thanks.

-- 
John Moore HAM:NJ7E/CAP:T-Bird 381 {ames!ncar!noao!asuvax,mcdphx}!anasaz!john 
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